Lamb is accused of assaulting the victim in a restroom stall at 9 Richland Medical Park Drive, which is a doctor's office near the Palmetto Health Richland campus. He is also accused of trying to steal money from the woman's purse.

When a witness walked into the restroom, Lamb ran from the scene.

The victim was treated at the scene after suffering head injuries.

Lamb is listed on SLED's South Carolina Public Sex Offender Registry. Prior convictions include indecent exposure, exposure of private parts in a lewd manner, peeping, voyeurism, or aggravated voyeurism, and failure to register as a sex offender.

Officers said earlier he will be charged with criminal sexual conduct to the first degree, kidnapping, trespassing, and strong armed robbery.